Note: Citations are based on reference standards. However, formatting rules can vary widely between applications and fields of interest or study. The specific requirements or preferences of your reviewing publisher, classroom teacher, institution or organization should be applied.

Accompanies the exhibition organized by the Whitney Museum and sponsored by Philip Morris Incorporated and the National Endowment for the Arts; to be held at Hayward Gallery, London, Feb. 11-Mar. 29, 1981, and four other museums, Apr. 22, 1981-Feb. 10, 1982.